People with food allergies are advised to avoid the allergen because treatments are limited.Credit: BSIP/UIG Via Getty Six people who were highly allergic to peanuts can tolerate the nut after receiving a faecal transplant, reports a study published on 5 August in Science Translational Medicine. The small trial1 of 15 people is the first evidence
Developing sperm (blue; artificially colored) fill the center of the seminiferous tubules (orange), which form the human testicle.Credit: Susumu Nishinaga/Scientific Photo Library A cutting-edge operation has restored a man’s ability to produce sperm by transplanting tissue samples that were removed from one of his testicles and frozen 16 years earlier, when he was still a